package com.imooc.controller;

import com.imooc.pojo.Users;
import com.imooc.pojo.bo.UserBO;
import com.imooc.server.UserService;
import com.imooc.utils.CookieUtils;
import com.imooc.utils.IMOOCJSONResult;
import com.imooc.utils.JsonUtils;
import com.imooc.utils.MD5Utils;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import org.apache.commons.lang3.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

@Api(value = "注册登录", tags = {"用于注册登录的相关接口"})
@RestController
@RequestMapping("passport")
public class PassportController {

    @Autowired
    private UserService userService;

    @ApiOperation(value="用户是否存在",notes = "用户是否存在",httpMethod = "GET")
    @GetMapping("/usernameIsExist")
    public IMOOCJSONResult usernameIsExist(@RequestParam String username){

        //判断入参不能为空
        if(StringUtils.isBlank(username)){
            return IMOOCJSONResult.errorMsg("用户名不能为空");
        }

        //查找注册的用户是否存在
        boolean isExist = userService.queryUsernameIsExist(username);
        if (isExist) {
            return IMOOCJSONResult.errorMsg("用户名已经存在");
        }

        //请求成功，用户名没有重复
        return IMOOCJSONResult.ok();
    }

    @ApiOperation(value="用户注册",notes = "用户注册",httpMethod = "POST")
    @PostMapping("/regist")
    public IMOOCJSONResult regist(@RequestBody UserBO userBO ,
                                  HttpServletRequest request,
                                  HttpServletResponse response){

        String username = userBO.getUsername();

        String password = userBO.getPassword();

        String confirmPwd = userBO.getConfirmPassword();

        //判断用户名和密码不为空
        if (StringUtils.isBlank(username) || StringUtils.isBlank(password)||
        StringUtils.isBlank(confirmPwd)){
            return IMOOCJSONResult.errorMsg("用户名或者密码不能为空");
        }

        //查询用户是否存在
        boolean isExist = userService.queryUsernameIsExist(username);
        if (isExist) {
            return IMOOCJSONResult.errorMsg("用户名已经存在");
        }
        //密码长度不能少于6位
        if (password.length() < 6 ) {
            return IMOOCJSONResult.errorMsg("密码长度不能少于6");
        }
        //判断两次密码是否一致
        if (!password.equals (confirmPwd)){

            return IMOOCJSONResult.errorMsg("两次密码输入不一致");
        }



        //实现注册
        Users userResult = userService.createUser(userBO);

        userResult = setNullProperty(userResult);

        CookieUtils.setCookie( request , response , "user" ,
                JsonUtils.objectToJson(userResult) , true);
        //请求成功，用户名没有重复
        return IMOOCJSONResult.ok();
    }

    @ApiOperation(value="用户登录",notes = "用户登录",httpMethod = "POST")
    @PostMapping("/login")
    public IMOOCJSONResult login(@RequestBody UserBO userBO ,
                                 HttpServletRequest request,
                                 HttpServletResponse response) throws  Exception{

        String username = userBO.getUsername();

        String password = userBO.getPassword();


        //判断用户名和密码不为空
        if (StringUtils.isBlank(username) || StringUtils.isBlank(password)){
            return IMOOCJSONResult.errorMsg("用户名或者密码不能为空");
        }

        //实现登录
        Users userResult = userService.queryUserForLogin(username, MD5Utils.getMD5Str(password) );

        if(userResult == null){
            return IMOOCJSONResult.errorMsg("用户名或者密码错误");
        }

        userResult = setNullProperty(userResult);

        CookieUtils.setCookie( request , response , "user" ,
                JsonUtils.objectToJson(userResult) , true);

        //请求成功，用户名没有重复
        return IMOOCJSONResult.ok(userResult);
    }

    private Users setNullProperty(Users userResult){
        userResult.setPassword(null);
        userResult.setMobile(null);
        userResult.setEmail(null);
        userResult.setCreatedTime(null);
        userResult.setUpdatedTime(null);
        userResult.setBirthday(null);
        return userResult;
    }

    @ApiOperation(value = "用户退出登录" , notes = "用户退出登录", httpMethod = "POST")
    @PostMapping("/logout")
    public IMOOCJSONResult logout(@RequestParam String userId,
                                  HttpServletRequest request,
                                  HttpServletResponse response){

        CookieUtils.deleteCookie(request, response, "user");

        return IMOOCJSONResult.ok();
    }

}
